Camera.java revision af40ad5126da5b116440e015fbc3cfb55ff437d4
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.camera; 18 19import com.android.camera.ui.CameraHeadUpDisplay; 20import com.android.camera.ui.CameraPicker; 21import com.android.camera.ui.FocusRectangle; 22import com.android.camera.ui.GLRootView; 23import com.android.camera.ui.HeadUpDisplay; 24import com.android.camera.ui.IndicatorWheel; 25import com.android.camera.ui.RotateImageView; 26import com.android.camera.ui.ZoomControllerListener; 27import com.android.camera.ui.ZoomPicker; 28 29import android.app.Activity; 30import android.content.BroadcastReceiver; 31import android.content.ContentProviderClient; 32import android.content.ContentResolver; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.SharedPreferences.Editor; 37import android.content.res.Configuration; 38import android.content.res.Resources; 39import android.graphics.Bitmap; 40import android.graphics.Rect; 41import android.hardware.Camera.Area; 42import android.hardware.Camera.CameraInfo; 43import android.hardware.Camera.Parameters; 44import android.hardware.Camera.PictureCallback; 45import android.hardware.Camera.Size; 46import android.location.Location; 47import android.location.LocationManager; 48import android.location.LocationProvider; 49import android.media.AudioManager; 50import android.media.ToneGenerator; 51import android.net.Uri; 52import android.os.Build; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Looper; 56import android.os.Message; 57import android.os.MessageQueue; 58import android.os.SystemClock; 59import android.provider.MediaStore; 60import android.provider.Settings; 61import android.util.Log; 62import android.view.GestureDetector; 63import android.view.KeyEvent; 64import android.view.Menu; 65import android.view.MenuItem; 66import android.view.MenuItem.OnMenuItemClickListener; 67import android.view.MotionEvent; 68import android.view.OrientationEventListener; 69import android.view.SurfaceHolder; 70import android.view.SurfaceView; 71import android.view.View; 72import android.view.ViewGroup; 73import android.view.Window; 74import android.view.WindowManager; 75import android.widget.Button; 76import android.widget.ImageView; 77import android.widget.RelativeLayout; 78import android.widget.Toast; 79 80import java.io.File; 81import java.io.FileNotFoundException; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.io.OutputStream; 85import java.text.SimpleDateFormat; 86import java.util.ArrayList; 87import java.util.Collections; 88import java.util.Date; 89import java.util.List; 90 91/** The Camera activity which can preview and take pictures. */ 92public class Camera extends ActivityBase implements View.OnClickListener, 93 View.OnTouchListener, ShutterButton.OnShutterButtonListener, 94 SurfaceHolder.Callback, Switcher.OnSwitchListener { 95 96 private static final String TAG = "camera"; 97 98 private static final String LAST_THUMB_FILENAME = "image_last_thumb"; 99 100 private static final int CROP_MSG = 1; 101 private static final int FIRST_TIME_INIT = 2; 102 private static final int RESTART_PREVIEW = 3; 103 private static final int CLEAR_SCREEN_DELAY = 4; 104 private static final int SET_CAMERA_PARAMETERS_WHEN_IDLE = 5; 105 private static final int CHECK_DISPLAY_ROTATION = 6; 106 private static final int CANCEL_AUTOFOCUS = 7; 107 108 // The subset of parameters we need to update in setCameraParameters(). 109 private static final int UPDATE_PARAM_INITIALIZE = 1; 110 private static final int UPDATE_PARAM_ZOOM = 2; 111 private static final int UPDATE_PARAM_PREFERENCE = 4; 112 private static final int UPDATE_PARAM_ALL = -1; 113 114 // When setCameraParametersWhenIdle() is called, we accumulate the subsets 115 // needed to be updated in mUpdateSet. 116 private int mUpdateSet; 117 118 // The brightness settings used when it is set to automatic in the system. 119 // The reason why it is set to 0.7 is just because 1.0 is too bright. 120 private static final float DEFAULT_CAMERA_BRIGHTNESS = 0.7f; 121 122 private static final int SCREEN_DELAY = 2 * 60 * 1000; 123 private static final int FOCUS_BEEP_VOLUME = 100; 124 125 private static final int ZOOM_STOPPED = 0; 126 private static final int ZOOM_START = 1; 127 private static final int ZOOM_STOPPING = 2; 128 129 private int mZoomState = ZOOM_STOPPED; 130 private boolean mSmoothZoomSupported = false; 131 private int mZoomValue; // The current zoom value. 132 private int mZoomMax; 133 private int mTargetZoomValue; 134 private ZoomPicker mZoomPicker; 135 136 private Parameters mParameters; 137 private Parameters mInitialParams; 138 139 private MyOrientationEventListener mOrientationListener; 140 // The device orientation in degrees. Default is unknown. 141 private int mOrientation = OrientationEventListener.ORIENTATION_UNKNOWN; 142 // The orientation compensation for icons and thumbnails. 143 private int mOrientationCompensation = 0; 144 private ComboPreferences mPreferences; 145 146 private static final boolean SWITCH_CAMERA = true; 147 private static final boolean SWITCH_VIDEO = false; 148 149 private static final String sTempCropFilename = "crop-temp"; 150 151 private android.hardware.Camera mCameraDevice; 152 private ContentProviderClient mMediaProviderClient; 153 private SurfaceHolder mSurfaceHolder = null; 154 private ShutterButton mShutterButton; 155 private ToneGenerator mFocusToneGenerator; 156 private GestureDetector mPopupGestureDetector; 157 private SwitcherSet mSwitcher; 158 private boolean mStartPreviewFail = false; 159 160 private View mPreviewFrame; // Preview frame area. 161 private View mPreviewBorder; 162 private FocusRectangle mFocusRectangle; 163 private List<Area> mFocusArea; // focus area in driver format 164 165 private GLRootView mGLRootView; 166 167 // A button showing the last captured picture thumbnail. Clicking on it 168 // goes to gallery. 169 private RotateImageView mThumbnailButton; 170 // The bitmap of the last captured picture thumbnail and the URI of the 171 // original picture. 172 private Thumbnail mThumbnail; 173 // An review image having same size as preview. It is displayed when 174 // share button is pressed. 175 private ImageView mReviewImage; 176 177 // mCropValue and mSaveUri are used only if isImageCaptureIntent() is true. 178 private String mCropValue; 179 private Uri mSaveUri; 180 181 // GPS on-screen indicator 182 private View mGpsNoSignalView; 183 private View mGpsHasSignalView; 184 185 // Front/Back camera pciker for xlarge layout 186 private CameraPicker mCameraPicker; 187 188 /** 189 * An unpublished intent flag requesting to return as soon as capturing 190 * is completed. 191 * 192 * TODO: consider publishing by moving into MediaStore. 193 */ 194 private final static String EXTRA_QUICK_CAPTURE = 195 "android.intent.extra.quickCapture"; 196 197 // The display rotation in degrees. This is only valid when mCameraState is 198 // not PREVIEW_STOPPED. 199 private int mDisplayRotation; 200 private boolean mPausing; 201 private boolean mFirstTimeInitialized; 202 private boolean mIsImageCaptureIntent; 203 private boolean mRecordLocation; 204 205 private static final int PREVIEW_STOPPED = 0; 206 private static final int IDLE = 1; // preview is active 207 private static final int FOCUSING = 2; 208 private static final int FOCUSING_SNAP_ON_FINISH = 3; 209 private static final int FOCUS_SUCCESS = 4; 210 private static final int FOCUS_FAIL = 5; 211 private static final int SNAPSHOT_IN_PROGRESS = 6; 212 private int mCameraState = PREVIEW_STOPPED; 213 214 private ContentResolver mContentResolver; 215 private boolean mDidRegister = false; 216 217 private final ArrayList<MenuItem> mGalleryItems = new ArrayList<MenuItem>(); 218 219 private LocationManager mLocationManager = null; 220 221 private final ShutterCallback mShutterCallback = new ShutterCallback(); 222 private final PostViewPictureCallback mPostViewPictureCallback = 223 new PostViewPictureCallback(); 224 private final RawPictureCallback mRawPictureCallback = 225 new RawPictureCallback(); 226 private final AutoFocusCallback mAutoFocusCallback = 227 new AutoFocusCallback(); 228 private final ZoomListener mZoomListener = new ZoomListener(); 229 private final CameraErrorCallback mErrorCallback = new CameraErrorCallback(); 230 231 private long mFocusStartTime; 232 private long mFocusCallbackTime; 233 private long mCaptureStartTime; 234 private long mShutterCallbackTime; 235 private long mPostViewPictureCallbackTime; 236 private long mRawPictureCallbackTime; 237 private long mJpegPictureCallbackTime; 238 private long mOnResumeTime; 239 private long mPicturesRemaining; 240 private byte[] mJpegImageData; 241 242 // These latency time are for the CameraLatency test. 243 public long mAutoFocusTime; 244 public long mShutterLag; 245 public long mShutterToPictureDisplayedTime; 246 public long mPictureDisplayedToJpegCallbackTime; 247 public long mJpegCallbackFinishTime; 248 249 // Focus mode. Options are pref_camera_focusmode_entryvalues. 250 private String mFocusMode; 251 private String mSceneMode; 252 private Toast mNotSelectableToast; 253 private Toast mNoShareToast; 254 255 private final Handler mHandler = new MainHandler(); 256 // xlarge devices use indicator wheel. Other devices use head-up display. 257 private CameraHeadUpDisplay mHeadUpDisplay; 258 private IndicatorWheel mIndicatorWheel; 259 private PreferenceGroup mPreferenceGroup; 260 261 // multiple cameras support 262 private int mNumberOfCameras; 263 private int mCameraId; 264 private int mFrontCameraId; 265 private int mBackCameraId; 266 267 private boolean mQuickCapture; 268 269 /** 270 * This Handler is used to post message back onto the main thread of the 271 * application 272 */ 273 private class MainHandler extends Handler { 274 @Override 275 public void handleMessage(Message msg) { 276 switch (msg.what) { 277 case RESTART_PREVIEW: { 278 restartPreview(); 279 if (mJpegPictureCallbackTime != 0) { 280 long now = System.currentTimeMillis(); 281 mJpegCallbackFinishTime = now - mJpegPictureCallbackTime; 282 Log.v(TAG, "mJpegCallbackFinishTime = " 283 + mJpegCallbackFinishTime + "ms"); 284 mJpegPictureCallbackTime = 0; 285 } 286 break; 287 } 288 289 case CLEAR_SCREEN_DELAY: { 290 getWindow().clearFlags( 291 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 292 break; 293 } 294 295 case FIRST_TIME_INIT: { 296 initializeFirstTime(); 297 break; 298 } 299 300 case SET_CAMERA_PARAMETERS_WHEN_IDLE: { 301 setCameraParametersWhenIdle(0); 302 break; 303 } 304 305 case CHECK_DISPLAY_ROTATION: { 306 // Restart the preview if display rotation has changed. 307 // Sometimes this happens when the device is held upside 308 // down and camera app is opened. Rotation animation will 309 // take some time and the rotation value we have got may be 310 // wrong. Framework does not have a callback for this now. 311 if (Util.getDisplayRotation(Camera.this) != mDisplayRotation 312 && isCameraIdle()) { 313 restartPreview(); 314 } 315 if (SystemClock.uptimeMillis() - mOnResumeTime < 5000) { 316 mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100); 317 } 318 break; 319 } 320 321 case CANCEL_AUTOFOCUS: { 322 cancelAutoFocus(); 323 break; 324 } 325 } 326 } 327 } 328 329 private void resetExposureCompensation() { 330 String value = mPreferences.getString(CameraSettings.KEY_EXPOSURE, 331 CameraSettings.EXPOSURE_DEFAULT_VALUE); 332 if (!CameraSettings.EXPOSURE_DEFAULT_VALUE.equals(value)) { 333 Editor editor = mPreferences.edit(); 334 editor.putString(CameraSettings.KEY_EXPOSURE, "0"); 335 editor.apply(); 336 if (mHeadUpDisplay != null) { 337 mHeadUpDisplay.reloadPreferences(); 338 } 339 if (mIndicatorWheel != null) { 340 mIndicatorWheel.reloadPreferences(); 341 } 342 } 343 } 344 345 private void keepMediaProviderInstance() { 346 // We want to keep a reference to MediaProvider in camera's lifecycle. 347 // TODO: Utilize mMediaProviderClient instance to replace 348 // ContentResolver calls. 349 if (mMediaProviderClient == null) { 350 mMediaProviderClient = getContentResolver() 351 .acquireContentProviderClient(MediaStore.AUTHORITY); 352 } 353 } 354 355 // Snapshots can only be taken after this is called. It should be called 356 // once only. We could have done these things in onCreate() but we want to 357 // make preview screen appear as soon as possible. 358 private void initializeFirstTime() { 359 if (mFirstTimeInitialized) return; 360 361 // Create orientation listenter. This should be done first because it 362 // takes some time to get first orientation. 363 mOrientationListener = new MyOrientationEventListener(Camera.this); 364 mOrientationListener.enable(); 365 366 // Initialize location sevice. 367 mLocationManager = (LocationManager) 368 getSystemService(Context.LOCATION_SERVICE); 369 mRecordLocation = RecordLocationPreference.get( 370 mPreferences, getContentResolver()); 371 initGpsOnScreenIndicator(); 372 if (mRecordLocation) startReceivingLocationUpdates(); 373 374 keepMediaProviderInstance(); 375 checkStorage(); 376 377 // Initialize last picture button. 378 mContentResolver = getContentResolver(); 379 if (!mIsImageCaptureIntent) { // no thumbnail in image capture intent 380 findViewById(R.id.camera_switch).setOnClickListener(this); 381 initThumbnailButton(); 382 } 383 384 // Initialize shutter button. 385 mShutterButton = (ShutterButton) findViewById(R.id.shutter_button); 386 mShutterButton.setOnShutterButtonListener(this); 387 mShutterButton.setVisibility(View.VISIBLE); 388 389 // Initialize focus UI. 390 mPreviewFrame = findViewById(R.id.camera_preview); 391 mPreviewFrame.setOnTouchListener(this); 392 mPreviewBorder = (View) findViewById(R.id.preview_border); 393 // Set the length of focus rectangle according to preview frame size. 394 int len = Math.min(mPreviewFrame.getWidth(), mPreviewFrame.getHeight()) / 4; 395 ViewGroup.LayoutParams layout = mFocusRectangle.getLayoutParams(); 396 layout.width = len; 397 layout.height = len; 398 399 initializeScreenBrightness(); 400 installIntentFilter(); 401 initializeFocusTone(); 402 initializeZoom(); 403 // xlarge devices use indicator wheel. Other devices use head-up display. 404 if (mIndicatorWheel == null) { 405 mHeadUpDisplay = new CameraHeadUpDisplay(this); 406 mHeadUpDisplay.setListener(new MyHeadUpDisplayListener()); 407 initializeHeadUpDisplay(); 408 } 409 mFirstTimeInitialized = true; 410 changeHeadUpDisplayState(); 411 addIdleHandler(); 412 } 413 414 private void addIdleHandler() { 415 MessageQueue queue = Looper.myQueue(); 416 queue.addIdleHandler(new MessageQueue.IdleHandler() { 417 public boolean queueIdle() { 418 Storage.ensureOSXCompatible(); 419 return false; 420 } 421 }); 422 } 423 424 private void initThumbnailButton() { 425 mThumbnailButton.setOnClickListener(this); 426 // Load the thumbnail from the disk. 427 mThumbnail = Thumbnail.loadFrom(LAST_THUMB_FILENAME); 428 updateThumbnailButton(); 429 } 430 431 private void updateThumbnailButton() { 432 // Update last image if URI is invalid and the storage is ready. 433 if ((mThumbnail == null || !Util.isUriValid(mThumbnail.getUri(), mContentResolver)) 434 && mPicturesRemaining >= 0) { 435 mThumbnail = Thumbnail.getLastImageThumbnail(mContentResolver); 436 } 437 if (mThumbnail != null) { 438 mThumbnailButton.setBitmap(mThumbnail.getBitmap()); 439 } else { 440 mThumbnailButton.setBitmap(null); 441 } 442 } 443 444 // If the activity is paused and resumed, this method will be called in 445 // onResume. 446 private void initializeSecondTime() { 447 // Start orientation listener as soon as possible because it takes 448 // some time to get first orientation. 449 mOrientationListener.enable(); 450 451 // Start location update if needed. 452 mRecordLocation = RecordLocationPreference.get( 453 mPreferences, getContentResolver()); 454 if (mRecordLocation) startReceivingLocationUpdates(); 455 456 installIntentFilter(); 457 initializeFocusTone(); 458 initializeZoom(); 459 changeHeadUpDisplayState(); 460 461 keepMediaProviderInstance(); 462 checkStorage(); 463 464 if (!mIsImageCaptureIntent) { 465 updateThumbnailButton(); 466 } 467 } 468 469 private void initializeZoom() { 470 if (!mParameters.isZoomSupported()) return; 471 472 mZoomMax = mParameters.getMaxZoom(); 473 mSmoothZoomSupported = mParameters.isSmoothZoomSupported(); 474 if (mZoomPicker != null) { 475 mZoomPicker.setZoomRatios(getZoomRatios()); 476 mZoomPicker.setZoomIndex(mParameters.getZoom()); 477 mZoomPicker.setSmoothZoomSupported(mSmoothZoomSupported); 478 mZoomPicker.setOnZoomChangeListener( 479 new ZoomPicker.OnZoomChangedListener() { 480 // only for immediate zoom 481 public void onZoomValueChanged(int index) { 482 Camera.this.onZoomValueChanged(index); 483 } 484 485 // only for smooth zoom 486 public void onZoomStateChanged(int state) { 487 if (mPausing) return; 488 489 Log.v(TAG, "zoom picker state=" + state); 490 if (state == mZoomPicker.ZOOM_IN) { 491 Camera.this.onZoomValueChanged(mZoomMax); 492 } else if (state == mZoomPicker.ZOOM_OUT){ 493 Camera.this.onZoomValueChanged(0); 494 } else { 495 mTargetZoomValue = -1; 496 if (mZoomState == ZOOM_START) { 497 mZoomState = ZOOM_STOPPING; 498 mCameraDevice.stopSmoothZoom(); 499 } 500 } 501 } 502 }); 503 } 504 505 mCameraDevice.setZoomChangeListener(mZoomListener); 506 } 507 508 private void onZoomValueChanged(int index) { 509 // Not useful to change zoom value when the activity is paused. 510 if (mPausing) return; 511 512 if (mSmoothZoomSupported) { 513 if (mTargetZoomValue != index && mZoomState != ZOOM_STOPPED) { 514 mTargetZoomValue = index; 515 if (mZoomState == ZOOM_START) { 516 mZoomState = ZOOM_STOPPING; 517 mCameraDevice.stopSmoothZoom(); 518 } 519 } else if (mZoomState == ZOOM_STOPPED && mZoomValue != index) { 520 mTargetZoomValue = index; 521 mCameraDevice.startSmoothZoom(index); 522 mZoomState = ZOOM_START; 523 } 524 } else { 525 mZoomValue = index; 526 setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM); 527 } 528 } 529 530 private float[] getZoomRatios() { 531 if(!mParameters.isZoomSupported()) return null; 532 List<Integer> zoomRatios = mParameters.getZoomRatios(); 533 float result[] = new float[zoomRatios.size()]; 534 for (int i = 0, n = result.length; i < n; ++i) { 535 result[i] = (float) zoomRatios.get(i) / 100f; 536 } 537 return result; 538 } 539 540 private class PopupGestureListener 541 extends GestureDetector.SimpleOnGestureListener { 542 public boolean onDown(MotionEvent e) { 543 // Check if the popup window is visible. 544 View popup = mIndicatorWheel.getActivePopupWindow(); 545 if (popup == null) return false; 546 547 548 // Let popup window, indicator wheel or preview frame handle the 549 // event by themselves. Dismiss the popup window if users touch on 550 // other areas. 551 if (!Util.pointInView(e.getX(), e.getY(), popup) 552 && !Util.pointInView(e.getX(), e.getY(), mIndicatorWheel) 553 && !Util.pointInView(e.getX(), e.getY(), mPreviewFrame)) { 554 mIndicatorWheel.dismissSettingPopup(); 555 // Let event fall through. 556 } 557 return false; 558 } 559 } 560 561 @Override 562 public boolean dispatchTouchEvent(MotionEvent m) { 563 // Check if the popup window should be dismissed first. 564 if (mPopupGestureDetector != null && mPopupGestureDetector.onTouchEvent(m)) { 565 return true; 566 } 567 568 return super.dispatchTouchEvent(m); 569 } 570 571 LocationListener [] mLocationListeners = new LocationListener[] { 572 new LocationListener(LocationManager.GPS_PROVIDER), 573 new LocationListener(LocationManager.NETWORK_PROVIDER) 574 }; 575 576 private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 577 @Override 578 public void onReceive(Context context, Intent intent) { 579 String action = intent.getAction(); 580 if (action.equals(Intent.ACTION_MEDIA_MOUNTED) 581 || action.equals(Intent.ACTION_MEDIA_UNMOUNTED) 582 || action.equals(Intent.ACTION_MEDIA_CHECKING)) { 583 checkStorage(); 584 } else if (action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) { 585 checkStorage(); 586 if (!mIsImageCaptureIntent) { 587 updateThumbnailButton(); 588 } 589 } 590 } 591 }; 592 593 private void initializeCameraPicker() { 594 mCameraPicker = (CameraPicker) findViewById(R.id.camera_picker); 595 if (mCameraPicker != null) { 596 mCameraPicker.setImageResource(R.drawable.camera_toggle); 597 ListPreference pref = mPreferenceGroup.findPreference( 598 CameraSettings.KEY_CAMERA_ID); 599 if (pref != null) { 600 mCameraPicker.initialize(pref); 601 mCameraPicker.setListener(new MyCameraPickerListener()); 602 } 603 } 604 } 605 606 private void initGpsOnScreenIndicator() { 607 mGpsNoSignalView = findViewById(R.id.onscreen_gps_indicator_no_signal); 608 mGpsHasSignalView = findViewById(R.id.onscreen_gps_indicator_on); 609 } 610 611 private void showGpsOnScreenIndicator(boolean hasSignal) { 612 if (hasSignal) { 613 if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE); 614 if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.VISIBLE); 615 } else { 616 if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.VISIBLE); 617 if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE); 618 } 619 } 620 621 private void hideGpsOnScreenIndicator() { 622 if (mGpsNoSignalView != null) mGpsNoSignalView.setVisibility(View.INVISIBLE); 623 if (mGpsHasSignalView != null) mGpsHasSignalView.setVisibility(View.INVISIBLE); 624 } 625 626 private class LocationListener 627 implements android.location.LocationListener { 628 Location mLastLocation; 629 boolean mValid = false; 630 String mProvider; 631 632 public LocationListener(String provider) { 633 mProvider = provider; 634 mLastLocation = new Location(mProvider); 635 } 636 637 public void onLocationChanged(Location newLocation) { 638 if (newLocation.getLatitude() == 0.0 639 && newLocation.getLongitude() == 0.0) { 640 // Hack to filter out 0.0,0.0 locations 641 return; 642 } 643 // If GPS is available before start camera, we won't get status 644 // update so update GPS indicator when we receive data. 645 if (mRecordLocation 646 && LocationManager.GPS_PROVIDER.equals(mProvider)) { 647 showGpsOnScreenIndicator(true); 648 } 649 if (!mValid) { 650 Log.d(TAG, "Got first location."); 651 } 652 mLastLocation.set(newLocation); 653 mValid = true; 654 } 655 656 public void onProviderEnabled(String provider) { 657 } 658 659 public void onProviderDisabled(String provider) { 660 mValid = false; 661 } 662 663 public void onStatusChanged( 664 String provider, int status, Bundle extras) { 665 switch(status) { 666 case LocationProvider.OUT_OF_SERVICE: 667 case LocationProvider.TEMPORARILY_UNAVAILABLE: { 668 mValid = false; 669 if (mRecordLocation && 670 LocationManager.GPS_PROVIDER.equals(provider)) { 671 showGpsOnScreenIndicator(false); 672 } 673 break; 674 } 675 } 676 } 677 678 public Location current() { 679 return mValid ? mLastLocation : null; 680 } 681 } 682 683 private final class ShutterCallback 684 implements android.hardware.Camera.ShutterCallback { 685 public void onShutter() { 686 mShutterCallbackTime = System.currentTimeMillis(); 687 mShutterLag = mShutterCallbackTime - mCaptureStartTime; 688 Log.v(TAG, "mShutterLag = " + mShutterLag + "ms"); 689 updateFocusUI(); 690 } 691 } 692 693 private final class PostViewPictureCallback implements PictureCallback { 694 public void onPictureTaken( 695 byte [] data, android.hardware.Camera camera) { 696 mPostViewPictureCallbackTime = System.currentTimeMillis(); 697 Log.v(TAG, "mShutterToPostViewCallbackTime = " 698 + (mPostViewPictureCallbackTime - mShutterCallbackTime) 699 + "ms"); 700 } 701 } 702 703 private final class RawPictureCallback implements PictureCallback { 704 public void onPictureTaken( 705 byte [] rawData, android.hardware.Camera camera) { 706 mRawPictureCallbackTime = System.currentTimeMillis(); 707 Log.v(TAG, "mShutterToRawCallbackTime = " 708 + (mRawPictureCallbackTime - mShutterCallbackTime) + "ms"); 709 } 710 } 711 712 private final class JpegPictureCallback implements PictureCallback { 713 Location mLocation; 714 715 public JpegPictureCallback(Location loc) { 716 mLocation = loc; 717 } 718 719 public void onPictureTaken( 720 final byte [] jpegData, final android.hardware.Camera camera) { 721 if (mPausing) { 722 return; 723 } 724 725 mJpegPictureCallbackTime = System.currentTimeMillis(); 726 // If postview callback has arrived, the captured image is displayed 727 // in postview callback. If not, the captured image is displayed in 728 // raw picture callback. 729 if (mPostViewPictureCallbackTime != 0) { 730 mShutterToPictureDisplayedTime = 731 mPostViewPictureCallbackTime - mShutterCallbackTime; 732 mPictureDisplayedToJpegCallbackTime = 733 mJpegPictureCallbackTime - mPostViewPictureCallbackTime; 734 } else { 735 mShutterToPictureDisplayedTime = 736 mRawPictureCallbackTime - mShutterCallbackTime; 737 mPictureDisplayedToJpegCallbackTime = 738 mJpegPictureCallbackTime - mRawPictureCallbackTime; 739 } 740 Log.v(TAG, "mPictureDisplayedToJpegCallbackTime = " 741 + mPictureDisplayedToJpegCallbackTime + "ms"); 742 743 if (!mIsImageCaptureIntent) { 744 enableCameraControls(true); 745 746 // We want to show the taken picture for a while, so we wait 747 // for at least 1.2 second before restarting the preview. 748 long delay = 1200 - mPictureDisplayedToJpegCallbackTime; 749 if (delay < 0) { 750 restartPreview(); 751 } else { 752 mHandler.sendEmptyMessageDelayed(RESTART_PREVIEW, delay); 753 } 754 } 755 storeImage(jpegData, camera, mLocation); 756 757 // Check this in advance of each shot so we don't add to shutter 758 // latency. It's true that someone else could write to the SD card in 759 // the mean time and fill it, but that could have happened between the 760 // shutter press and saving the JPEG too. 761 checkStorage(); 762 763 if (!mHandler.hasMessages(RESTART_PREVIEW)) { 764 long now = System.currentTimeMillis(); 765 mJpegCallbackFinishTime = now - mJpegPictureCallbackTime; 766 Log.v(TAG, "mJpegCallbackFinishTime = " 767 + mJpegCallbackFinishTime + "ms"); 768 mJpegPictureCallbackTime = 0; 769 } 770 } 771 } 772 773 private final class AutoFocusCallback 774 implements android.hardware.Camera.AutoFocusCallback { 775 public void onAutoFocus( 776 boolean focused, android.hardware.Camera camera) { 777 mFocusCallbackTime = System.currentTimeMillis(); 778 mAutoFocusTime = mFocusCallbackTime - mFocusStartTime; 779 Log.v(TAG, "mAutoFocusTime = " + mAutoFocusTime + "ms"); 780 if (mCameraState == FOCUSING_SNAP_ON_FINISH) { 781 // Take the picture no matter focus succeeds or fails. No need 782 // to play the AF sound if we're about to play the shutter 783 // sound. 784 if (focused) { 785 mCameraState = FOCUS_SUCCESS; 786 } else { 787 mCameraState = FOCUS_FAIL; 788 } 789 updateFocusUI(); 790 capture(); 791 } else if (mCameraState == FOCUSING) { 792 // This happens when (1) user is half-pressing the focus key or 793 // (2) touch focus is triggered. Play the focus tone. Do not 794 // take the picture now. 795 if (focused) { 796 mCameraState = FOCUS_SUCCESS; 797 if (mFocusToneGenerator != null) { 798 mFocusToneGenerator.startTone(ToneGenerator.TONE_PROP_BEEP2); 799 } 800 } else { 801 mCameraState = FOCUS_FAIL; 802 } 803 updateFocusUI(); 804 enableCameraControls(true); 805 // If this is triggered by touch focus, cancel focus after a 806 // while. 807 if (mFocusArea != null) { 808 mHandler.sendEmptyMessageDelayed(CANCEL_AUTOFOCUS, 3000); 809 } 810 } else if (mCameraState == IDLE) { 811 // User has released the focus key before focus completes. 812 // Do nothing. 813 } 814 815 } 816 } 817 818 private final class ZoomListener 819 implements android.hardware.Camera.OnZoomChangeListener { 820 public void onZoomChange( 821 int value, boolean stopped, android.hardware.Camera camera) { 822 Log.v(TAG, "Zoom changed: value=" + value + ". stopped="+ stopped); 823 mZoomValue = value; 824 825 // Update the UI when we get zoom value. 826 if (mZoomPicker != null) mZoomPicker.setZoomIndex(value); 827 828 // Keep mParameters up to date. We do not getParameter again in 829 // takePicture. If we do not do this, wrong zoom value will be set. 830 mParameters.setZoom(value); 831 832 if (stopped && mZoomState != ZOOM_STOPPED) { 833 if (mTargetZoomValue != -1 && value != mTargetZoomValue) { 834 mCameraDevice.startSmoothZoom(mTargetZoomValue); 835 mZoomState = ZOOM_START; 836 } else { 837 mZoomState = ZOOM_STOPPED; 838 } 839 } 840 } 841 } 842 843 public void storeImage(final byte[] data, 844 android.hardware.Camera camera, Location loc) { 845 if (!mIsImageCaptureIntent) { 846 long dateTaken = System.currentTimeMillis(); 847 String title = createName(dateTaken); 848 int orientation = Exif.getOrientation(data); 849 Uri uri = Storage.addImage(mContentResolver, title, dateTaken, 850 loc, orientation, data); 851 if (uri != null) { 852 // Create a thumbnail whose size is smaller than half of the surface view. 853 int ratio = (int) Math.ceil((double) mParameters.getPictureSize().width 854 / (mPreviewFrame.getWidth() / 2)); 855 int inSampleSize = Util.nextPowerOf2(ratio); 856 mThumbnail = Thumbnail.createThumbnail(data, orientation, inSampleSize, uri); 857 if (mThumbnail != null) { 858 mThumbnailButton.setBitmap(mThumbnail.getBitmap()); 859 } 860 sendBroadcast(new Intent("com.android.camera.NEW_PICTURE", uri)); 861 } 862 } else { 863 mJpegImageData = data; 864 if (!mQuickCapture) { 865 showPostCaptureAlert(); 866 } else { 867 doAttach(); 868 } 869 } 870 } 871 872 private void capture() { 873 // If we are already in the middle of taking a snapshot then ignore. 874 if (mPausing || mCameraState == SNAPSHOT_IN_PROGRESS || mCameraDevice == null) { 875 return; 876 } 877 mCaptureStartTime = System.currentTimeMillis(); 878 mPostViewPictureCallbackTime = 0; 879 enableCameraControls(false); 880 mJpegImageData = null; 881 882 // See android.hardware.Camera.Parameters.setRotation for 883 // documentation. 884 int rotation = 0; 885 if (mOrientation != OrientationEventListener.ORIENTATION_UNKNOWN) { 886 CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId]; 887 if (info.facing == CameraInfo.CAMERA_FACING_FRONT) { 888 rotation = (info.orientation - mOrientation + 360) % 360; 889 } else { // back-facing camera 890 rotation = (info.orientation + mOrientation) % 360; 891 } 892 } 893 mParameters.setRotation(rotation); 894 895 // Clear previous GPS location from the parameters. 896 mParameters.removeGpsData(); 897 898 // We always encode GpsTimeStamp 899 mParameters.setGpsTimestamp(System.currentTimeMillis() / 1000); 900 901 // Set GPS location. 902 Location loc = mRecordLocation ? getCurrentLocation() : null; 903 if (loc != null) { 904 double lat = loc.getLatitude(); 905 double lon = loc.getLongitude(); 906 boolean hasLatLon = (lat != 0.0d) || (lon != 0.0d); 907 908 if (hasLatLon) { 909 Log.d(TAG, "Set gps location"); 910 mParameters.setGpsLatitude(lat); 911 mParameters.setGpsLongitude(lon); 912 mParameters.setGpsProcessingMethod(loc.getProvider().toUpperCase()); 913 if (loc.hasAltitude()) { 914 mParameters.setGpsAltitude(loc.getAltitude()); 915 } else { 916 // for NETWORK_PROVIDER location provider, we may have 917 // no altitude information, but the driver needs it, so 918 // we fake one. 919 mParameters.setGpsAltitude(0); 920 } 921 if (loc.getTime() != 0) { 922 // Location.getTime() is UTC in milliseconds. 923 // gps-timestamp is UTC in seconds. 924 long utcTimeSeconds = loc.getTime() / 1000; 925 mParameters.setGpsTimestamp(utcTimeSeconds); 926 } 927 } else { 928 loc = null; 929 } 930 } 931 932 mCameraDevice.setParameters(mParameters); 933 934 mCameraDevice.takePicture(mShutterCallback, mRawPictureCallback, 935 mPostViewPictureCallback, new JpegPictureCallback(loc)); 936 mCameraState = SNAPSHOT_IN_PROGRESS; 937 mHandler.removeMessages(CANCEL_AUTOFOCUS); 938 } 939 940 private boolean saveDataToFile(String filePath, byte[] data) { 941 FileOutputStream f = null; 942 try { 943 f = new FileOutputStream(filePath); 944 f.write(data); 945 } catch (IOException e) { 946 return false; 947 } finally { 948 Util.closeSilently(f); 949 } 950 return true; 951 } 952 953 private String createName(long dateTaken) { 954 Date date = new Date(dateTaken); 955 SimpleDateFormat dateFormat = new SimpleDateFormat( 956 getString(R.string.image_file_name_format)); 957 958 return dateFormat.format(date); 959 } 960 961 @Override 962 public void onCreate(Bundle icicle) { 963 super.onCreate(icicle); 964 965 mIsImageCaptureIntent = isImageCaptureIntent(); 966 if (mIsImageCaptureIntent) { 967 setContentView(R.layout.camera_attach); 968 } else { 969 setContentView(R.layout.camera); 970 } 971 mFocusRectangle = (FocusRectangle) findViewById(R.id.focus_rectangle); 972 mThumbnailButton = (RotateImageView) findViewById(R.id.review_thumbnail); 973 mReviewImage = (ImageView) findViewById(R.id.review_image); 974 975 mPreferences = new ComboPreferences(this); 976 CameraSettings.upgradeGlobalPreferences(mPreferences.getGlobal()); 977 978 mCameraId = CameraSettings.readPreferredCameraId(mPreferences); 979 980 // Testing purpose. Launch a specific camera through the intent extras. 981 int intentCameraId = Util.getCameraFacingIntentExtras(this); 982 if (intentCameraId != -1) { 983 mCameraId = intentCameraId; 984 } 985 986 mPreferences.setLocalId(this, mCameraId); 987 CameraSettings.upgradeLocalPreferences(mPreferences.getLocal()); 988 989 mNumberOfCameras = CameraHolder.instance().getNumberOfCameras(); 990 mQuickCapture = getIntent().getBooleanExtra(EXTRA_QUICK_CAPTURE, false); 991 992 // we need to reset exposure for the preview 993 resetExposureCompensation(); 994 /* 995 * To reduce startup time, we start the preview in another thread. 996 * We make sure the preview is started at the end of onCreate. 997 */ 998 Thread startPreviewThread = new Thread(new Runnable() { 999 public void run() { 1000 try { 1001 mStartPreviewFail = false; 1002 startPreview(); 1003 } catch (CameraHardwareException e) { 1004 // In eng build, we throw the exception so that test tool 1005 // can detect it and report it 1006 if ("eng".equals(Build.TYPE)) { 1007 throw new RuntimeException(e); 1008 } 1009 mStartPreviewFail = true; 1010 } 1011 } 1012 }); 1013 startPreviewThread.start(); 1014 1015 // don't set mSurfaceHolder here. We have it set ONLY within 1016 // surfaceChanged / surfaceDestroyed, other parts of the code 1017 // assume that when it is set, the surface is also set. 1018 SurfaceView preview = (SurfaceView) findViewById(R.id.camera_preview); 1019 SurfaceHolder holder = preview.getHolder(); 1020 holder.addCallback(this); 1021 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 1022 1023 if (mIsImageCaptureIntent) { 1024 setupCaptureParams(); 1025 1026 findViewById(R.id.review_control).setVisibility(View.VISIBLE); 1027 findViewById(R.id.btn_cancel).setOnClickListener(this); 1028 findViewById(R.id.btn_retake).setOnClickListener(this); 1029 findViewById(R.id.btn_done).setOnClickListener(this); 1030 } else { 1031 mSwitcher = (SwitcherSet) findViewById(R.id.camera_switch); 1032 mSwitcher.setVisibility(View.VISIBLE); 1033 mSwitcher.setOnSwitchListener(this); 1034 } 1035 1036 // Make sure preview is started. 1037 try { 1038 startPreviewThread.join(); 1039 if (mStartPreviewFail) { 1040 showCameraErrorAndFinish(); 1041 return; 1042 } 1043 } catch (InterruptedException ex) { 1044 // ignore 1045 } 1046 1047 mBackCameraId = CameraHolder.instance().getBackCameraId(); 1048 mFrontCameraId = CameraHolder.instance().getFrontCameraId(); 1049 1050 // Do this after starting preview because it depends on camera 1051 // parameters. 1052 initializeIndicatorWheel(); 1053 initializeCameraPicker(); 1054 1055 mZoomPicker = (ZoomPicker) findViewById(R.id.zoom_picker); 1056 if (mZoomPicker != null) mZoomPicker.setEnabled(true); // disabled initially in xml 1057 } 1058 1059 private void changeHeadUpDisplayState() { 1060 if (mHeadUpDisplay == null) return; 1061 // If the camera resumes behind the lock screen, the orientation 1062 // will be portrait. That causes OOM when we try to allocation GPU 1063 // memory for the GLSurfaceView again when the orientation changes. So, 1064 // we delayed initialization of HeadUpDisplay until the orientation 1065 // becomes landscape. 1066 Configuration config = getResources().getConfiguration(); 1067 if (config.orientation == Configuration.ORIENTATION_LANDSCAPE 1068 && !mPausing && mFirstTimeInitialized) { 1069 if (mGLRootView == null) attachHeadUpDisplay(); 1070 } else if (mGLRootView != null) { 1071 detachHeadUpDisplay(); 1072 } 1073 } 1074 1075 private void overrideCameraSettings(final String flashMode, 1076 final String whiteBalance, final String focusMode) { 1077 if (mHeadUpDisplay != null) { 1078 mHeadUpDisplay.overrideSettings( 1079 CameraSettings.KEY_FLASH_MODE, flashMode, 1080 CameraSettings.KEY_WHITE_BALANCE, whiteBalance, 1081 CameraSettings.KEY_FOCUS_MODE, focusMode); 1082 } 1083 if (mIndicatorWheel != null) { 1084 mIndicatorWheel.overrideSettings( 1085 CameraSettings.KEY_FLASH_MODE, flashMode, 1086 CameraSettings.KEY_WHITE_BALANCE, whiteBalance, 1087 CameraSettings.KEY_FOCUS_MODE, focusMode); 1088 } 1089 } 1090 1091 private void updateSceneModeUI() { 1092 // If scene mode is set, we cannot set flash mode, white balance, and 1093 // focus mode, instead, we read it from driver 1094 if (!Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) { 1095 overrideCameraSettings(mParameters.getFlashMode(), 1096 mParameters.getWhiteBalance(), mParameters.getFocusMode()); 1097 } else { 1098 overrideCameraSettings(null, null, null); 1099 } 1100 } 1101 1102 private void loadCameraPreferences() { 1103 CameraSettings settings = new CameraSettings(this, mInitialParams, 1104 mCameraId, CameraHolder.instance().getCameraInfo()); 1105 mPreferenceGroup = settings.getPreferenceGroup(R.xml.camera_preferences); 1106 } 1107 1108 private void initializeIndicatorWheel() { 1109 mIndicatorWheel = (IndicatorWheel) findViewById(R.id.indicator_wheel); 1110 if (mIndicatorWheel == null) return; 1111 loadCameraPreferences(); 1112 1113 final String[] SETTING_KEYS = { 1114 CameraSettings.KEY_FLASH_MODE, 1115 CameraSettings.KEY_WHITE_BALANCE, 1116 CameraSettings.KEY_SCENE_MODE}; 1117 final String[] OTHER_SETTING_KEYS = { 1118 CameraSettings.KEY_RECORD_LOCATION, 1119 CameraSettings.KEY_FOCUS_MODE, 1120 CameraSettings.KEY_EXPOSURE, 1121 CameraSettings.KEY_COLOR_EFFECT, 1122 CameraSettings.KEY_PICTURE_SIZE, 1123 CameraSettings.KEY_JPEG_QUALITY}; 1124 mIndicatorWheel.initialize(this, mPreferenceGroup, SETTING_KEYS, 1125 OTHER_SETTING_KEYS); 1126 mIndicatorWheel.setListener(new MyIndicatorWheelListener()); 1127 mPopupGestureDetector = new GestureDetector(this, 1128 new PopupGestureListener()); 1129 updateSceneModeUI(); 1130 } 1131 1132 private void initializeHeadUpDisplay() { 1133 if (mHeadUpDisplay == null) return; 1134 loadCameraPreferences(); 1135 1136 // If we have zoom picker, do not show zoom control on head-up display. 1137 float[] zoomRatios = null; 1138 if (mZoomPicker == null) zoomRatios = getZoomRatios(); 1139 mHeadUpDisplay.initialize(this, mPreferenceGroup, 1140 zoomRatios, mOrientationCompensation); 1141 if (mZoomPicker == null && mParameters.isZoomSupported()) { 1142 mHeadUpDisplay.setZoomListener(new ZoomControllerListener() { 1143 public void onZoomChanged( 1144 int index, float ratio, boolean isMoving) { 1145 onZoomValueChanged(index); 1146 } 1147 }); 1148 } 1149 updateSceneModeUI(); 1150 } 1151 1152 private void attachHeadUpDisplay() { 1153 mHeadUpDisplay.setOrientation(mOrientationCompensation); 1154 if (mParameters.isZoomSupported()) { 1155 mHeadUpDisplay.setZoomIndex(mZoomValue); 1156 } 1157 ViewGroup frame = (ViewGroup) findViewById(R.id.frame); 1158 mGLRootView = new GLRootView(this); 1159 mGLRootView.setContentPane(mHeadUpDisplay); 1160 frame.addView(mGLRootView); 1161 } 1162 1163 private void detachHeadUpDisplay() { 1164 mHeadUpDisplay.collapse(); 1165 ((ViewGroup) mGLRootView.getParent()).removeView(mGLRootView); 1166 mGLRootView = null; 1167 } 1168 1169 private boolean collapseCameraControls() { 1170 if (mHeadUpDisplay != null && mHeadUpDisplay.collapse()) { 1171 return true; 1172 } 1173 if (mIndicatorWheel != null && mIndicatorWheel.dismissSettingPopup()) { 1174 return true; 1175 } 1176 return false; 1177 } 1178 1179 private void enableCameraControls(boolean enable) { 1180 if (mHeadUpDisplay != null) mHeadUpDisplay.setEnabled(enable); 1181 if (mIndicatorWheel != null) mIndicatorWheel.setEnabled(enable); 1182 if (mCameraPicker != null) mCameraPicker.setEnabled(enable); 1183 if (mZoomPicker != null) mZoomPicker.setEnabled(enable); 1184 if (mSwitcher != null) mSwitcher.setEnabled(enable); 1185 } 1186 1187 public static int roundOrientation(int orientation) { 1188 return ((orientation + 45) / 90 * 90) % 360; 1189 } 1190 1191 private class MyOrientationEventListener 1192 extends OrientationEventListener { 1193 public MyOrientationEventListener(Context context) { 1194 super(context); 1195 } 1196 1197 @Override 1198 public void onOrientationChanged(int orientation) { 1199 // We keep the last known orientation. So if the user first orient 1200 // the camera then point the camera to floor or sky, we still have 1201 // the correct orientation. 1202 if (orientation == ORIENTATION_UNKNOWN) return; 1203 mOrientation = roundOrientation(orientation); 1204 // When the screen is unlocked, display rotation may change. Always 1205 // calculate the up-to-date orientationCompensation. 1206 int orientationCompensation = mOrientation 1207 + Util.getDisplayRotation(Camera.this); 1208 if (mOrientationCompensation != orientationCompensation) { 1209 mOrientationCompensation = orientationCompensation; 1210 if (!mIsImageCaptureIntent) { 1211 setOrientationIndicator(mOrientationCompensation); 1212 } 1213 if (mHeadUpDisplay != null) { 1214 mHeadUpDisplay.setOrientation(mOrientationCompensation); 1215 } 1216 } 1217 } 1218 } 1219 1220 private void setOrientationIndicator(int degree) { 1221 RotateImageView icon = (RotateImageView) findViewById( 1222 R.id.review_thumbnail); 1223 if (icon != null) icon.setDegree(degree); 1224 1225 icon = (RotateImageView) findViewById(R.id.camera_switch_icon); 1226 if (icon != null) icon.setDegree(degree); 1227 icon = (RotateImageView) findViewById(R.id.video_switch_icon); 1228 if (icon != null) icon.setDegree(degree); 1229 } 1230 1231 @Override 1232 public void onStart() { 1233 super.onStart(); 1234 if (!mIsImageCaptureIntent) { 1235 mSwitcher.setSwitch(SWITCH_CAMERA); 1236 } 1237 } 1238 1239 @Override 1240 public void onStop() { 1241 super.onStop(); 1242 if (mMediaProviderClient != null) { 1243 mMediaProviderClient.release(); 1244 mMediaProviderClient = null; 1245 } 1246 } 1247 1248 private void checkStorage() { 1249 mPicturesRemaining = Storage.getAvailableSpace(); 1250 if (mPicturesRemaining > 0) { 1251 mPicturesRemaining /= 1500000; 1252 } 1253 updateStorageHint(); 1254 } 1255 1256 public void onClick(View v) { 1257 switch (v.getId()) { 1258 case R.id.btn_retake: 1259 hidePostCaptureAlert(); 1260 restartPreview(); 1261 break; 1262 case R.id.review_thumbnail: 1263 if (isCameraIdle() && mThumbnail != null) { 1264 Util.viewUri(mThumbnail.getUri(), this); 1265 } 1266 break; 1267 case R.id.btn_done: 1268 doAttach(); 1269 break; 1270 case R.id.btn_cancel: 1271 doCancel(); 1272 break; 1273 case R.id.btn_gallery: 1274 gotoGallery(); 1275 break; 1276 } 1277 } 1278 1279 private void doAttach() { 1280 if (mPausing) { 1281 return; 1282 } 1283 1284 byte[] data = mJpegImageData; 1285 1286 if (mCropValue == null) { 1287 // First handle the no crop case -- just return the value. If the 1288 // caller specifies a "save uri" then write the data to it's 1289 // stream. Otherwise, pass back a scaled down version of the bitmap 1290 // directly in the extras. 1291 if (mSaveUri != null) { 1292 OutputStream outputStream = null; 1293 try { 1294 outputStream = mContentResolver.openOutputStream(mSaveUri); 1295 outputStream.write(data); 1296 outputStream.close(); 1297 1298 setResultEx(RESULT_OK); 1299 finish(); 1300 } catch (IOException ex) { 1301 // ignore exception 1302 } finally { 1303 Util.closeSilently(outputStream); 1304 } 1305 } else { 1306 int orientation = Exif.getOrientation(data); 1307 Bitmap bitmap = Util.makeBitmap(data, 50 * 1024); 1308 bitmap = Util.rotate(bitmap, orientation); 1309 setResultEx(RESULT_OK, 1310 new Intent("inline-data").putExtra("data", bitmap)); 1311 finish(); 1312 } 1313 } else { 1314 // Save the image to a temp file and invoke the cropper 1315 Uri tempUri = null; 1316 FileOutputStream tempStream = null; 1317 try { 1318 File path = getFileStreamPath(sTempCropFilename); 1319 path.delete(); 1320 tempStream = openFileOutput(sTempCropFilename, 0); 1321 tempStream.write(data); 1322 tempStream.close(); 1323 tempUri = Uri.fromFile(path); 1324 } catch (FileNotFoundException ex) { 1325 setResultEx(Activity.RESULT_CANCELED); 1326 finish(); 1327 return; 1328 } catch (IOException ex) { 1329 setResultEx(Activity.RESULT_CANCELED); 1330 finish(); 1331 return; 1332 } finally { 1333 Util.closeSilently(tempStream); 1334 } 1335 1336 Bundle newExtras = new Bundle(); 1337 if (mCropValue.equals("circle")) { 1338 newExtras.putString("circleCrop", "true"); 1339 } 1340 if (mSaveUri != null) { 1341 newExtras.putParcelable(MediaStore.EXTRA_OUTPUT, mSaveUri); 1342 } else { 1343 newExtras.putBoolean("return-data", true); 1344 } 1345 1346 Intent cropIntent = new Intent("com.android.camera.action.CROP"); 1347 1348 cropIntent.setData(tempUri); 1349 cropIntent.putExtras(newExtras); 1350 1351 startActivityForResult(cropIntent, CROP_MSG); 1352 } 1353 } 1354 1355 private void doCancel() { 1356 setResultEx(RESULT_CANCELED, new Intent()); 1357 finish(); 1358 } 1359 1360 public void onShutterButtonFocus(ShutterButton button, boolean pressed) { 1361 if (mPausing) { 1362 return; 1363 } 1364 switch (button.getId()) { 1365 case R.id.shutter_button: 1366 doFocus(pressed); 1367 break; 1368 } 1369 } 1370 1371 public void onShutterButtonClick(ShutterButton button) { 1372 if (mPausing) { 1373 return; 1374 } 1375 switch (button.getId()) { 1376 case R.id.shutter_button: 1377 doSnap(); 1378 break; 1379 } 1380 } 1381 1382 private OnScreenHint mStorageHint; 1383 1384 private void updateStorageHint() { 1385 String noStorageText = null; 1386 1387 if (mPicturesRemaining == Storage.UNAVAILABLE) { 1388 noStorageText = getString(R.string.no_storage); 1389 } else if (mPicturesRemaining == Storage.PREPARING) { 1390 noStorageText = getString(R.string.preparing_sd); 1391 } else if (mPicturesRemaining == Storage.UNKNOWN_SIZE) { 1392 noStorageText = getString(R.string.access_sd_fail); 1393 } else if (mPicturesRemaining < 1L) { 1394 noStorageText = getString(R.string.not_enough_space); 1395 } 1396 1397 if (noStorageText != null) { 1398 if (mStorageHint == null) { 1399 mStorageHint = OnScreenHint.makeText(this, noStorageText); 1400 } else { 1401 mStorageHint.setText(noStorageText); 1402 } 1403 mStorageHint.show(); 1404 } else if (mStorageHint != null) { 1405 mStorageHint.cancel(); 1406 mStorageHint = null; 1407 } 1408 } 1409 1410 private void installIntentFilter() { 1411 // install an intent filter to receive SD card related events. 1412 IntentFilter intentFilter = 1413 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED); 1414 intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED); 1415 intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED); 1416 intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING); 1417 intentFilter.addDataScheme("file"); 1418 registerReceiver(mReceiver, intentFilter); 1419 mDidRegister = true; 1420 } 1421 1422 private void initializeFocusTone() { 1423 // Initialize focus tone generator. 1424 try { 1425 mFocusToneGenerator = new ToneGenerator( 1426 AudioManager.STREAM_SYSTEM, FOCUS_BEEP_VOLUME); 1427 } catch (Throwable ex) { 1428 Log.w(TAG, "Exception caught while creating tone generator: ", ex); 1429 mFocusToneGenerator = null; 1430 } 1431 } 1432 1433 private void initializeScreenBrightness() { 1434 Window win = getWindow(); 1435 // Overright the brightness settings if it is automatic 1436 int mode = Settings.System.getInt( 1437 getContentResolver(), 1438 Settings.System.SCREEN_BRIGHTNESS_MODE, 1439 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); 1440 if (mode == Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC) { 1441 WindowManager.LayoutParams winParams = win.getAttributes(); 1442 winParams.screenBrightness = DEFAULT_CAMERA_BRIGHTNESS; 1443 win.setAttributes(winParams); 1444 } 1445 } 1446 1447 @Override 1448 protected void onResume() { 1449 super.onResume(); 1450 1451 mPausing = false; 1452 mJpegPictureCallbackTime = 0; 1453 mZoomValue = 0; 1454 1455 mReviewImage.setVisibility(View.GONE); 1456 1457 // Start the preview if it is not started. 1458 if (mCameraState == PREVIEW_STOPPED && !mStartPreviewFail) { 1459 resetExposureCompensation(); 1460 if (!restartPreview()) return; 1461 } 1462 1463 if (mSurfaceHolder != null) { 1464 // If first time initialization is not finished, put it in the 1465 // message queue. 1466 if (!mFirstTimeInitialized) { 1467 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1468 } else { 1469 initializeSecondTime(); 1470 } 1471 } 1472 keepScreenOnAwhile(); 1473 1474 if (mCameraState == IDLE) { 1475 mOnResumeTime = SystemClock.uptimeMillis(); 1476 mHandler.sendEmptyMessageDelayed(CHECK_DISPLAY_ROTATION, 100); 1477 } 1478 } 1479 1480 @Override 1481 public void onConfigurationChanged(Configuration config) { 1482 super.onConfigurationChanged(config); 1483 changeHeadUpDisplayState(); 1484 } 1485 1486 @Override 1487 protected void onPause() { 1488 mPausing = true; 1489 stopPreview(); 1490 // Close the camera now because other activities may need to use it. 1491 closeCamera(); 1492 resetScreenOn(); 1493 collapseCameraControls(); 1494 changeHeadUpDisplayState(); 1495 1496 if (mFirstTimeInitialized) { 1497 mOrientationListener.disable(); 1498 if (!mIsImageCaptureIntent) { 1499 if (mThumbnail != null) mThumbnail.saveTo(LAST_THUMB_FILENAME); 1500 } 1501 hidePostCaptureAlert(); 1502 } 1503 1504 if (mDidRegister) { 1505 unregisterReceiver(mReceiver); 1506 mDidRegister = false; 1507 } 1508 stopReceivingLocationUpdates(); 1509 1510 if (mFocusToneGenerator != null) { 1511 mFocusToneGenerator.release(); 1512 mFocusToneGenerator = null; 1513 } 1514 1515 if (mStorageHint != null) { 1516 mStorageHint.cancel(); 1517 mStorageHint = null; 1518 } 1519 1520 // If we are in an image capture intent and has taken 1521 // a picture, we just clear it in onPause. 1522 mJpegImageData = null; 1523 1524 // Remove the messages in the event queue. 1525 mHandler.removeMessages(RESTART_PREVIEW); 1526 mHandler.removeMessages(FIRST_TIME_INIT); 1527 mHandler.removeMessages(CHECK_DISPLAY_ROTATION); 1528 mHandler.removeMessages(CANCEL_AUTOFOCUS); 1529 1530 super.onPause(); 1531 } 1532 1533 @Override 1534 protected void onActivityResult( 1535 int requestCode, int resultCode, Intent data) { 1536 switch (requestCode) { 1537 case CROP_MSG: { 1538 Intent intent = new Intent(); 1539 if (data != null) { 1540 Bundle extras = data.getExtras(); 1541 if (extras != null) { 1542 intent.putExtras(extras); 1543 } 1544 } 1545 setResultEx(resultCode, intent); 1546 finish(); 1547 1548 File path = getFileStreamPath(sTempCropFilename); 1549 path.delete(); 1550 1551 break; 1552 } 1553 } 1554 } 1555 1556 private boolean canTakePicture() { 1557 return isCameraIdle() && (mPicturesRemaining > 0); 1558 } 1559 1560 private void autoFocus() { 1561 Log.v(TAG, "Start autofocus."); 1562 mFocusStartTime = System.currentTimeMillis(); 1563 mCameraDevice.autoFocus(mAutoFocusCallback); 1564 mCameraState = FOCUSING; 1565 enableCameraControls(false); 1566 updateFocusUI(); 1567 mHandler.removeMessages(CANCEL_AUTOFOCUS); 1568 } 1569 1570 private void cancelAutoFocus() { 1571 Log.v(TAG, "Cancel autofocus."); 1572 mCameraDevice.cancelAutoFocus(); 1573 mCameraState = IDLE; 1574 enableCameraControls(true); 1575 resetTouchFocus(); 1576 setCameraParameters(UPDATE_PARAM_PREFERENCE); 1577 updateFocusUI(); 1578 mHandler.removeMessages(CANCEL_AUTOFOCUS); 1579 } 1580 1581 private void updateFocusUI() { 1582 if (mCameraState == FOCUSING || mCameraState == FOCUSING_SNAP_ON_FINISH) { 1583 mFocusRectangle.showStart(); 1584 } else if (mCameraState == FOCUS_SUCCESS) { 1585 mFocusRectangle.showSuccess(); 1586 } else if (mCameraState == FOCUS_FAIL) { 1587 mFocusRectangle.showFail(); 1588 } else if (mCameraState == IDLE && mFocusArea != null) { 1589 // Users touch on the preview and the rectangle indicates the metering area. 1590 // Either focus area is not supported or autoFocus call is not required. 1591 mFocusRectangle.showStart(); 1592 } else { 1593 mFocusRectangle.clear(); 1594 } 1595 } 1596 1597 // Preview area is touched. Handle touch focus. 1598 @Override 1599 public boolean onTouch(View v, MotionEvent e) { 1600 if (mPausing || !mFirstTimeInitialized || mCameraState == SNAPSHOT_IN_PROGRESS 1601 || mCameraState == FOCUSING_SNAP_ON_FINISH) { 1602 return false; 1603 } 1604 1605 // Do not trigger touch focus if popup window is opened. 1606 if (collapseCameraControls()) return false; 1607 1608 // Check if metering area or focus area is supported. 1609 boolean focusAreaSupported = (mParameters.getMaxNumFocusAreas() > 0 1610 && (mFocusMode.equals(Parameters.FOCUS_MODE_AUTO) || 1611 mFocusMode.equals(Parameters.FOCUS_MODE_MACRO) || 1612 mFocusMode.equals(Parameters.FOCUS_MODE_CONTINUOUS_VIDEO))); 1613 boolean meteringAreaSupported = (mParameters.getMaxNumMeteringAreas() > 0); 1614 if (!focusAreaSupported && !meteringAreaSupported) return false; 1615 1616 boolean callAutoFocusRequired = false; 1617 if (focusAreaSupported && 1618 (mFocusMode.equals(Parameters.FOCUS_MODE_AUTO) || 1619 mFocusMode.equals(Parameters.FOCUS_MODE_MACRO))) { 1620 callAutoFocusRequired = true; 1621 } 1622 1623 // Let users be able to cancel previous touch focus. 1624 if (callAutoFocusRequired && mFocusArea != null && e.getAction() == MotionEvent.ACTION_DOWN 1625 && (mCameraState == FOCUSING || mCameraState == FOCUS_SUCCESS || 1626 mCameraState == FOCUS_FAIL)) { 1627 cancelAutoFocus(); 1628 } 1629 1630 // Initialize variables. 1631 int x = Math.round(e.getX()); 1632 int y = Math.round(e.getY()); 1633 int focusWidth = mFocusRectangle.getWidth(); 1634 int focusHeight = mFocusRectangle.getHeight(); 1635 int previewWidth = mPreviewFrame.getWidth(); 1636 int previewHeight = mPreviewFrame.getHeight(); 1637 if (mFocusArea == null) { 1638 mFocusArea = new ArrayList<Area>(); 1639 mFocusArea.add(new Area(new Rect(), 1)); 1640 } 1641 1642 // Convert the coordinates to driver format. The actual focus area is two times bigger than 1643 // UI because a huge rectangle looks strange. 1644 int areaWidth = focusWidth * 2; 1645 int areaHeight = focusHeight * 2; 1646 int areaLeft = Util.clamp(x - areaWidth / 2, 0, previewWidth - areaWidth); 1647 int areaTop = Util.clamp(y - areaHeight / 2, 0, previewHeight - areaHeight); 1648 Log.d(TAG, "x=" + x + ". y=" + y); 1649 Log.d(TAG, "Focus area left=" + areaLeft + ". top=" + areaTop); 1650 Log.d(TAG, "Preview width=" + previewWidth + ". height=" + previewHeight); 1651 Log.d(TAG, "focusWidth=" + focusWidth + ". focusHeight=" + focusHeight); 1652 Rect rect = mFocusArea.get(0).rect; 1653 convertToFocusArea(areaLeft, areaTop, areaWidth, areaHeight, previewWidth, previewHeight, 1654 mFocusArea.get(0).rect); 1655 1656 // Use margin to set the focus rectangle to the touched area. 1657 RelativeLayout.LayoutParams p = 1658 (RelativeLayout.LayoutParams) mFocusRectangle.getLayoutParams(); 1659 int left = Util.clamp(x - focusWidth / 2, 0, previewWidth - focusWidth); 1660 int top = Util.clamp(y - focusHeight / 2, 0, previewHeight - focusHeight); 1661 p.setMargins(left, top, 0, 0); 1662 // Disable "center" rule because we no longer want to put it in the center. 1663 int[] rules = p.getRules(); 1664 rules[RelativeLayout.CENTER_IN_PARENT] = 0; 1665 mFocusRectangle.requestLayout(); 1666 1667 // Set the focus area and metering area. 1668 setCameraParameters(UPDATE_PARAM_PREFERENCE); 1669 if (callAutoFocusRequired && e.getAction() == MotionEvent.ACTION_UP) { 1670 autoFocus(); 1671 } else { // Just show the rectangle in all other cases. 1672 updateFocusUI(); 1673 } 1674 1675 return true; 1676 } 1677 1678 // Convert the touch point to the focus area in driver format. 1679 public static void convertToFocusArea(int left, int top, int focusWidth, int focusHeight, 1680 int previewWidth, int previewHeight, Rect rect) { 1681 rect.left = Math.round((float) left / previewWidth * 2000 - 1000); 1682 rect.top = Math.round((float) top / previewHeight * 2000 - 1000); 1683 rect.right = Math.round((float) (left + focusWidth) / previewWidth * 2000 - 1000); 1684 rect.bottom = Math.round((float) (top + focusHeight) / previewHeight * 2000 - 1000); 1685 } 1686 1687 void resetTouchFocus() { 1688 // Put focus rectangle to the center. 1689 RelativeLayout.LayoutParams p = 1690 (RelativeLayout.LayoutParams) mFocusRectangle.getLayoutParams(); 1691 int[] rules = p.getRules(); 1692 rules[RelativeLayout.CENTER_IN_PARENT] = RelativeLayout.TRUE; 1693 p.setMargins(0, 0, 0, 0); 1694 1695 mFocusArea = null; 1696 } 1697 1698 @Override 1699 public void onBackPressed() { 1700 if (!isCameraIdle()) { 1701 // ignore backs while we're taking a picture 1702 return; 1703 } else if (!collapseCameraControls()) { 1704 super.onBackPressed(); 1705 } 1706 } 1707 1708 @Override 1709 public boolean onKeyDown(int keyCode, KeyEvent event) { 1710 switch (keyCode) { 1711 case KeyEvent.KEYCODE_FOCUS: 1712 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1713 doFocus(true); 1714 } 1715 return true; 1716 case KeyEvent.KEYCODE_CAMERA: 1717 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1718 doSnap(); 1719 } 1720 return true; 1721 case KeyEvent.KEYCODE_DPAD_CENTER: 1722 // If we get a dpad center event without any focused view, move 1723 // the focus to the shutter button and press it. 1724 if (mFirstTimeInitialized && event.getRepeatCount() == 0) { 1725 // Start auto-focus immediately to reduce shutter lag. After 1726 // the shutter button gets the focus, doFocus() will be 1727 // called again but it is fine. 1728 if (collapseCameraControls()) return true; 1729 doFocus(true); 1730 if (mShutterButton.isInTouchMode()) { 1731 mShutterButton.requestFocusFromTouch(); 1732 } else { 1733 mShutterButton.requestFocus(); 1734 } 1735 mShutterButton.setPressed(true); 1736 } 1737 return true; 1738 } 1739 1740 return super.onKeyDown(keyCode, event); 1741 } 1742 1743 @Override 1744 public boolean onKeyUp(int keyCode, KeyEvent event) { 1745 switch (keyCode) { 1746 case KeyEvent.KEYCODE_FOCUS: 1747 if (mFirstTimeInitialized) { 1748 doFocus(false); 1749 } 1750 return true; 1751 } 1752 return super.onKeyUp(keyCode, event); 1753 } 1754 1755 private void doSnap() { 1756 if (collapseCameraControls()) return; 1757 1758 Log.v(TAG, "doSnap: mCameraState=" + mCameraState); 1759 // If the user has half-pressed the shutter and focus is completed, we 1760 // can take the photo right away. If the focus mode is infinity, we can 1761 // also take the photo. 1762 if (mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1763 || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED) 1764 || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF) 1765 || (mCameraState == FOCUS_SUCCESS 1766 || mCameraState == FOCUS_FAIL)) { 1767 capture(); 1768 } else if (mCameraState == FOCUSING) { 1769 // Half pressing the shutter (i.e. the focus button event) will 1770 // already have requested AF for us, so just request capture on 1771 // focus here. 1772 mCameraState = FOCUSING_SNAP_ON_FINISH; 1773 } else if (mCameraState == IDLE) { 1774 // Focus key down event is dropped for some reasons. Just ignore. 1775 } 1776 } 1777 1778 private void doFocus(boolean pressed) { 1779 // Do the focus if the mode is not infinity. 1780 if (collapseCameraControls()) return; 1781 if (!(mFocusMode.equals(Parameters.FOCUS_MODE_INFINITY) 1782 || mFocusMode.equals(Parameters.FOCUS_MODE_FIXED) 1783 || mFocusMode.equals(Parameters.FOCUS_MODE_EDOF))) { 1784 if (pressed) { // Focus key down. 1785 // Do not do focus if there is not enoguh storage. Do not focus 1786 // if touch focus has been triggered, that is, camera state is 1787 // FOCUS_SUCCESS or FOCUS_FAIL. 1788 if (canTakePicture() && mCameraState != FOCUS_SUCCESS 1789 && mCameraState != FOCUS_FAIL) { 1790 autoFocus(); 1791 } 1792 } else { // Focus key up. 1793 // User releases half-pressed focus key. 1794 if (mCameraState == FOCUSING || mCameraState == FOCUS_SUCCESS 1795 || mCameraState == FOCUS_FAIL) { 1796 cancelAutoFocus(); 1797 } 1798 } 1799 } 1800 } 1801 1802 public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { 1803 // Make sure we have a surface in the holder before proceeding. 1804 if (holder.getSurface() == null) { 1805 Log.d(TAG, "holder.getSurface() == null"); 1806 return; 1807 } 1808 1809 Log.v(TAG, "surfaceChanged. w=" + w + ". h=" + h); 1810 1811 // We need to save the holder for later use, even when the mCameraDevice 1812 // is null. This could happen if onResume() is invoked after this 1813 // function. 1814 mSurfaceHolder = holder; 1815 1816 // The mCameraDevice will be null if it fails to connect to the camera 1817 // hardware. In this case we will show a dialog and then finish the 1818 // activity, so it's OK to ignore it. 1819 if (mCameraDevice == null) return; 1820 1821 // Sometimes surfaceChanged is called after onPause or before onResume. 1822 // Ignore it. 1823 if (mPausing || isFinishing()) return; 1824 1825 // Set preview display if the surface is being created. Preview was 1826 // already started. Also restart the preview if display rotation has 1827 // changed. Sometimes this happens when the device is held in portrait 1828 // and camera app is opened. Rotation animation takes some time and 1829 // display rotation in onCreate may not be what we want. 1830 if (mCameraState != PREVIEW_STOPPED 1831 && (Util.getDisplayRotation(this) == mDisplayRotation) 1832 && holder.isCreating()) { 1833 // Set preview display if the surface is being created and preview 1834 // was already started. That means preview display was set to null 1835 // and we need to set it now. 1836 setPreviewDisplay(holder); 1837 } else { 1838 // 1. Restart the preview if the size of surface was changed. The 1839 // framework may not support changing preview display on the fly. 1840 // 2. Start the preview now if surface was destroyed and preview 1841 // stopped. 1842 restartPreview(); 1843 } 1844 1845 // If first time initialization is not finished, send a message to do 1846 // it later. We want to finish surfaceChanged as soon as possible to let 1847 // user see preview first. 1848 if (!mFirstTimeInitialized) { 1849 mHandler.sendEmptyMessage(FIRST_TIME_INIT); 1850 } else { 1851 initializeSecondTime(); 1852 } 1853 } 1854 1855 public void surfaceCreated(SurfaceHolder holder) { 1856 } 1857 1858 public void surfaceDestroyed(SurfaceHolder holder) { 1859 stopPreview(); 1860 mSurfaceHolder = null; 1861 } 1862 1863 private void closeCamera() { 1864 if (mCameraDevice != null) { 1865 CameraHolder.instance().release(); 1866 mCameraDevice.setZoomChangeListener(null); 1867 mCameraDevice = null; 1868 mCameraState = PREVIEW_STOPPED; 1869 } 1870 } 1871 1872 private void ensureCameraDevice() throws CameraHardwareException { 1873 if (mCameraDevice == null) { 1874 mCameraDevice = CameraHolder.instance().open(mCameraId); 1875 mInitialParams = mCameraDevice.getParameters(); 1876 } 1877 } 1878 1879 private void showCameraErrorAndFinish() { 1880 Resources ress = getResources(); 1881 Util.showFatalErrorAndFinish(Camera.this, 1882 ress.getString(R.string.camera_error_title), 1883 ress.getString(R.string.cannot_connect_camera)); 1884 } 1885 1886 private boolean restartPreview() { 1887 try { 1888 startPreview(); 1889 } catch (CameraHardwareException e) { 1890 showCameraErrorAndFinish(); 1891 return false; 1892 } 1893 return true; 1894 } 1895 1896 private void setPreviewDisplay(SurfaceHolder holder) { 1897 try { 1898 mCameraDevice.setPreviewDisplay(holder); 1899 } catch (Throwable ex) { 1900 closeCamera(); 1901 throw new RuntimeException("setPreviewDisplay failed", ex); 1902 } 1903 } 1904 1905 private void startPreview() throws CameraHardwareException { 1906 if (mPausing || isFinishing()) return; 1907 1908 resetTouchFocus(); 1909 1910 ensureCameraDevice(); 1911 mCameraDevice.setErrorCallback(mErrorCallback); 1912 1913 // If we're previewing already, stop the preview first (this will blank 1914 // the screen). 1915 if (mCameraState != PREVIEW_STOPPED) stopPreview(); 1916 1917 setPreviewDisplay(mSurfaceHolder); 1918 mDisplayRotation = Util.getDisplayRotation(this); 1919 Util.setCameraDisplayOrientation(mDisplayRotation, mCameraId, mCameraDevice); 1920 setCameraParameters(UPDATE_PARAM_ALL); 1921 1922 1923 try { 1924 Log.v(TAG, "startPreview"); 1925 mCameraDevice.startPreview(); 1926 } catch (Throwable ex) { 1927 closeCamera(); 1928 throw new RuntimeException("startPreview failed", ex); 1929 } 1930 mZoomState = ZOOM_STOPPED; 1931 mCameraState = IDLE; 1932 } 1933 1934 private void stopPreview() { 1935 if (mCameraDevice != null && mCameraState != PREVIEW_STOPPED) { 1936 Log.v(TAG, "stopPreview"); 1937 mCameraDevice.stopPreview(); 1938 } 1939 mCameraState = PREVIEW_STOPPED; 1940 // If auto focus was in progress, it would have been canceled. 1941 updateFocusUI(); 1942 } 1943 1944 private static boolean isSupported(String value, List<String> supported) { 1945 return supported == null ? false : supported.indexOf(value) >= 0; 1946 } 1947 1948 private void updateCameraParametersInitialize() { 1949 // Reset preview frame rate to the maximum because it may be lowered by 1950 // video camera application. 1951 List<Integer> frameRates = mParameters.getSupportedPreviewFrameRates(); 1952 if (frameRates != null) { 1953 Integer max = Collections.max(frameRates); 1954 mParameters.setPreviewFrameRate(max); 1955 } 1956 1957 } 1958 1959 private void updateCameraParametersZoom() { 1960 // Set zoom. 1961 if (mParameters.isZoomSupported()) { 1962 mParameters.setZoom(mZoomValue); 1963 } 1964 } 1965 1966 private void updateCameraParametersPreference() { 1967 if (mParameters.getMaxNumFocusAreas() > 0) { 1968 mParameters.setFocusAreas(mFocusArea); 1969 Log.d(TAG, "Parameter focus areas=" + mParameters.get("focus-areas")); 1970 } 1971 1972 if (mParameters.getMaxNumMeteringAreas() > 0) { 1973 // Use the same area for focus and metering. 1974 mParameters.setMeteringAreas(mFocusArea); 1975 } 1976 1977 // Set picture size. 1978 String pictureSize = mPreferences.getString( 1979 CameraSettings.KEY_PICTURE_SIZE, null); 1980 if (pictureSize == null) { 1981 CameraSettings.initialCameraPictureSize(this, mParameters); 1982 } else { 1983 List<Size> supported = mParameters.getSupportedPictureSizes(); 1984 CameraSettings.setCameraPictureSize( 1985 pictureSize, supported, mParameters); 1986 } 1987 1988 // Set the preview frame aspect ratio according to the picture size. 1989 Size size = mParameters.getPictureSize(); 1990 PreviewFrameLayout frameLayout = 1991 (PreviewFrameLayout) findViewById(R.id.frame_layout); 1992 frameLayout.setAspectRatio((double) size.width / size.height); 1993 1994 // Set a preview size that is closest to the viewfinder height and has 1995 // the right aspect ratio. 1996 List<Size> sizes = mParameters.getSupportedPreviewSizes(); 1997 Size optimalSize = Util.getOptimalPreviewSize(this, 1998 sizes, (double) size.width / size.height); 1999 Size original = mParameters.getPreviewSize(); 2000 if (!original.equals(optimalSize)) { 2001 mParameters.setPreviewSize(optimalSize.width, optimalSize.height); 2002 2003 // Zoom related settings will be changed for different preview 2004 // sizes, so set and read the parameters to get lastest values 2005 mCameraDevice.setParameters(mParameters); 2006 mParameters = mCameraDevice.getParameters(); 2007 } 2008 Log.v(TAG, "Preview size is " + optimalSize.width + "x" + optimalSize.height); 2009 2010 // Since change scene mode may change supported values, 2011 // Set scene mode first, 2012 mSceneMode = mPreferences.getString( 2013 CameraSettings.KEY_SCENE_MODE, 2014 getString(R.string.pref_camera_scenemode_default)); 2015 if (isSupported(mSceneMode, mParameters.getSupportedSceneModes())) { 2016 if (!mParameters.getSceneMode().equals(mSceneMode)) { 2017 mParameters.setSceneMode(mSceneMode); 2018 mCameraDevice.setParameters(mParameters); 2019 2020 // Setting scene mode will change the settings of flash mode, 2021 // white balance, and focus mode. Here we read back the 2022 // parameters, so we can know those settings. 2023 mParameters = mCameraDevice.getParameters(); 2024 } 2025 } else { 2026 mSceneMode = mParameters.getSceneMode(); 2027 if (mSceneMode == null) { 2028 mSceneMode = Parameters.SCENE_MODE_AUTO; 2029 } 2030 } 2031 2032 // Set JPEG quality. 2033 String jpegQuality = mPreferences.getString( 2034 CameraSettings.KEY_JPEG_QUALITY, 2035 getString(R.string.pref_camera_jpegquality_default)); 2036 mParameters.setJpegQuality(JpegEncodingQualityMappings.getQualityNumber(jpegQuality)); 2037 2038 // For the following settings, we need to check if the settings are 2039 // still supported by latest driver, if not, ignore the settings. 2040 2041 // Set color effect parameter. 2042 String colorEffect = mPreferences.getString( 2043 CameraSettings.KEY_COLOR_EFFECT, 2044 getString(R.string.pref_camera_coloreffect_default)); 2045 if (isSupported(colorEffect, mParameters.getSupportedColorEffects())) { 2046 mParameters.setColorEffect(colorEffect); 2047 } 2048 2049 // Set exposure compensation 2050 String exposure = mPreferences.getString( 2051 CameraSettings.KEY_EXPOSURE, 2052 getString(R.string.pref_exposure_default)); 2053 try { 2054 int value = Integer.parseInt(exposure); 2055 int max = mParameters.getMaxExposureCompensation(); 2056 int min = mParameters.getMinExposureCompensation(); 2057 if (value >= min && value <= max) { 2058 mParameters.setExposureCompensation(value); 2059 } else { 2060 Log.w(TAG, "invalid exposure range: " + exposure); 2061 } 2062 } catch (NumberFormatException e) { 2063 Log.w(TAG, "invalid exposure: " + exposure); 2064 } 2065 2066 if (Parameters.SCENE_MODE_AUTO.equals(mSceneMode)) { 2067 // Set flash mode. 2068 String flashMode = mPreferences.getString( 2069 CameraSettings.KEY_FLASH_MODE, 2070 getString(R.string.pref_camera_flashmode_default)); 2071 List<String> supportedFlash = mParameters.getSupportedFlashModes(); 2072 if (isSupported(flashMode, supportedFlash)) { 2073 mParameters.setFlashMode(flashMode); 2074 } else { 2075 flashMode = mParameters.getFlashMode(); 2076 if (flashMode == null) { 2077 flashMode = getString( 2078 R.string.pref_camera_flashmode_no_flash); 2079 } 2080 } 2081 2082 // Set white balance parameter. 2083 String whiteBalance = mPreferences.getString( 2084 CameraSettings.KEY_WHITE_BALANCE, 2085 getString(R.string.pref_camera_whitebalance_default)); 2086 if (isSupported(whiteBalance, 2087 mParameters.getSupportedWhiteBalance())) { 2088 mParameters.setWhiteBalance(whiteBalance); 2089 } else { 2090 whiteBalance = mParameters.getWhiteBalance(); 2091 if (whiteBalance == null) { 2092 whiteBalance = Parameters.WHITE_BALANCE_AUTO; 2093 } 2094 } 2095 2096 // Set focus mode. 2097 mFocusMode = mPreferences.getString( 2098 CameraSettings.KEY_FOCUS_MODE, 2099 getString(R.string.pref_camera_focusmode_default)); 2100 if (isSupported(mFocusMode, mParameters.getSupportedFocusModes())) { 2101 mParameters.setFocusMode(mFocusMode); 2102 } else { 2103 mFocusMode = mParameters.getFocusMode(); 2104 if (mFocusMode == null) { 2105 mFocusMode = Parameters.FOCUS_MODE_AUTO; 2106 } 2107 } 2108 } else { 2109 mFocusMode = mParameters.getFocusMode(); 2110 } 2111 } 2112 2113 // We separate the parameters into several subsets, so we can update only 2114 // the subsets actually need updating. The PREFERENCE set needs extra 2115 // locking because the preference can be changed from GLThread as well. 2116 private void setCameraParameters(int updateSet) { 2117 mParameters = mCameraDevice.getParameters(); 2118 2119 if ((updateSet & UPDATE_PARAM_INITIALIZE) != 0) { 2120 updateCameraParametersInitialize(); 2121 } 2122 2123 if ((updateSet & UPDATE_PARAM_ZOOM) != 0) { 2124 updateCameraParametersZoom(); 2125 } 2126 2127 if ((updateSet & UPDATE_PARAM_PREFERENCE) != 0) { 2128 updateCameraParametersPreference(); 2129 } 2130 2131 mCameraDevice.setParameters(mParameters); 2132 } 2133 2134 // If the Camera is idle, update the parameters immediately, otherwise 2135 // accumulate them in mUpdateSet and update later. 2136 private void setCameraParametersWhenIdle(int additionalUpdateSet) { 2137 mUpdateSet |= additionalUpdateSet; 2138 if (mCameraDevice == null) { 2139 // We will update all the parameters when we open the device, so 2140 // we don't need to do anything now. 2141 mUpdateSet = 0; 2142 return; 2143 } else if (isCameraIdle()) { 2144 setCameraParameters(mUpdateSet); 2145 updateSceneModeUI(); 2146 mUpdateSet = 0; 2147 } else { 2148 if (!mHandler.hasMessages(SET_CAMERA_PARAMETERS_WHEN_IDLE)) { 2149 mHandler.sendEmptyMessageDelayed( 2150 SET_CAMERA_PARAMETERS_WHEN_IDLE, 1000); 2151 } 2152 } 2153 } 2154 2155 private void gotoGallery() { 2156 MenuHelper.gotoCameraImageGallery(this); 2157 } 2158 2159 private void startReceivingLocationUpdates() { 2160 if (mLocationManager != null) { 2161 try { 2162 mLocationManager.requestLocationUpdates( 2163 LocationManager.NETWORK_PROVIDER, 2164 1000, 2165 0F, 2166 mLocationListeners[1]); 2167 } catch (SecurityException ex) { 2168 Log.i(TAG, "fail to request location update, ignore", ex); 2169 } catch (IllegalArgumentException ex) { 2170 Log.d(TAG, "provider does not exist " + ex.getMessage()); 2171 } 2172 try { 2173 mLocationManager.requestLocationUpdates( 2174 LocationManager.GPS_PROVIDER, 2175 1000, 2176 0F, 2177 mLocationListeners[0]); 2178 showGpsOnScreenIndicator(false); 2179 } catch (SecurityException ex) { 2180 Log.i(TAG, "fail to request location update, ignore", ex); 2181 } catch (IllegalArgumentException ex) { 2182 Log.d(TAG, "provider does not exist " + ex.getMessage()); 2183 } 2184 Log.d(TAG, "startReceivingLocationUpdates"); 2185 } 2186 } 2187 2188 private void stopReceivingLocationUpdates() { 2189 if (mLocationManager != null) { 2190 for (int i = 0; i < mLocationListeners.length; i++) { 2191 try { 2192 mLocationManager.removeUpdates(mLocationListeners[i]); 2193 } catch (Exception ex) { 2194 Log.i(TAG, "fail to remove location listners, ignore", ex); 2195 } 2196 } 2197 Log.d(TAG, "stopReceivingLocationUpdates"); 2198 } 2199 hideGpsOnScreenIndicator(); 2200 } 2201 2202 private Location getCurrentLocation() { 2203 // go in best to worst order 2204 for (int i = 0; i < mLocationListeners.length; i++) { 2205 Location l = mLocationListeners[i].current(); 2206 if (l != null) return l; 2207 } 2208 Log.d(TAG, "No location received yet."); 2209 return null; 2210 } 2211 2212 private boolean isCameraIdle() { 2213 return mCameraState == IDLE || mCameraState == FOCUS_SUCCESS || mCameraState == FOCUS_FAIL; 2214 } 2215 2216 private boolean isImageCaptureIntent() { 2217 String action = getIntent().getAction(); 2218 return (MediaStore.ACTION_IMAGE_CAPTURE.equals(action)); 2219 } 2220 2221 private void setupCaptureParams() { 2222 Bundle myExtras = getIntent().getExtras(); 2223 if (myExtras != null) { 2224 mSaveUri = (Uri) myExtras.getParcelable(MediaStore.EXTRA_OUTPUT); 2225 mCropValue = myExtras.getString("crop"); 2226 } 2227 } 2228 2229 private void showPostCaptureAlert() { 2230 if (mIsImageCaptureIntent) { 2231 if (mIndicatorWheel == null) { 2232 mShutterButton.setVisibility(View.INVISIBLE); 2233 } else { 2234 mShutterButton.setEnabled(false); 2235 } 2236 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 2237 for (int id : pickIds) { 2238 View button = findViewById(id); 2239 ((View) button.getParent()).setVisibility(View.VISIBLE); 2240 } 2241 2242 // Remove the text of the cancel button 2243 View view = findViewById(R.id.btn_cancel); 2244 if (view instanceof Button) ((Button) view).setText(""); 2245 } 2246 } 2247 2248 private void hidePostCaptureAlert() { 2249 if (mIsImageCaptureIntent) { 2250 if (mIndicatorWheel == null) { 2251 mShutterButton.setVisibility(View.VISIBLE); 2252 } else { 2253 mShutterButton.setEnabled(true); 2254 } 2255 int[] pickIds = {R.id.btn_retake, R.id.btn_done}; 2256 for (int id : pickIds) { 2257 View button = findViewById(id); 2258 ((View) button.getParent()).setVisibility(View.GONE); 2259 } 2260 enableCameraControls(true); 2261 2262 // Restore the text of the cancel button 2263 View view = findViewById(R.id.btn_cancel); 2264 if (view instanceof Button) { 2265 ((Button) view).setText(R.string.review_cancel); 2266 } 2267 } 2268 } 2269 2270 @Override 2271 public boolean onPrepareOptionsMenu(Menu menu) { 2272 super.onPrepareOptionsMenu(menu); 2273 // Only show the menu when camera is idle. 2274 for (int i = 0; i < menu.size(); i++) { 2275 menu.getItem(i).setVisible(isCameraIdle()); 2276 } 2277 2278 return true; 2279 } 2280 2281 @Override 2282 public boolean onCreateOptionsMenu(Menu menu) { 2283 super.onCreateOptionsMenu(menu); 2284 2285 if (mIsImageCaptureIntent) { 2286 // No options menu for attach mode. 2287 return false; 2288 } else { 2289 addBaseMenuItems(menu); 2290 } 2291 return true; 2292 } 2293 2294 private void addBaseMenuItems(Menu menu) { 2295 MenuHelper.addSwitchModeMenuItem(menu, true, new Runnable() { 2296 public void run() { 2297 switchToVideoMode(); 2298 } 2299 }); 2300 MenuItem gallery = menu.add(Menu.NONE, Menu.NONE, 2301 MenuHelper.POSITION_GOTO_GALLERY, 2302 R.string.camera_gallery_photos_text) 2303 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 2304 public boolean onMenuItemClick(MenuItem item) { 2305 gotoGallery(); 2306 return true; 2307 } 2308 }); 2309 gallery.setIcon(android.R.drawable.ic_menu_gallery); 2310 mGalleryItems.add(gallery); 2311 2312 if (mNumberOfCameras > 1) { 2313 menu.add(Menu.NONE, Menu.NONE, 2314 MenuHelper.POSITION_SWITCH_CAMERA_ID, 2315 R.string.switch_camera_id) 2316 .setOnMenuItemClickListener(new OnMenuItemClickListener() { 2317 public boolean onMenuItemClick(MenuItem item) { 2318 CameraSettings.writePreferredCameraId(mPreferences, 2319 ((mCameraId == mFrontCameraId) 2320 ? mBackCameraId : mFrontCameraId)); 2321 onSharedPreferenceChanged(); 2322 return true; 2323 } 2324 }).setIcon(android.R.drawable.ic_menu_camera); 2325 } 2326 } 2327 2328 private boolean switchToVideoMode() { 2329 if (isFinishing() || !isCameraIdle()) return false; 2330 MenuHelper.gotoVideoMode(Camera.this); 2331 mHandler.removeMessages(FIRST_TIME_INIT); 2332 finish(); 2333 return true; 2334 } 2335 2336 public boolean onSwitchChanged(Switcher source, boolean onOff) { 2337 if (onOff == SWITCH_VIDEO) { 2338 return switchToVideoMode(); 2339 } else { 2340 return true; 2341 } 2342 } 2343 2344 private void onSharedPreferenceChanged() { 2345 // ignore the events after "onPause()" 2346 if (mPausing) return; 2347 2348 boolean recordLocation; 2349 2350 recordLocation = RecordLocationPreference.get( 2351 mPreferences, getContentResolver()); 2352 2353 if (mRecordLocation != recordLocation) { 2354 mRecordLocation = recordLocation; 2355 if (mRecordLocation) { 2356 startReceivingLocationUpdates(); 2357 } else { 2358 stopReceivingLocationUpdates(); 2359 } 2360 } 2361 int cameraId = CameraSettings.readPreferredCameraId(mPreferences); 2362 if (mCameraId != cameraId) { 2363 // Restart the activity to have a crossfade animation. 2364 // TODO: Use SurfaceTexture to implement a better and faster 2365 // animation. 2366 if (mIsImageCaptureIntent) { 2367 // If the intent is camera capture, stay in camera capture mode. 2368 MenuHelper.gotoCameraMode(this, getIntent()); 2369 } else { 2370 MenuHelper.gotoCameraMode(this); 2371 } 2372 2373 finish(); 2374 } else { 2375 setCameraParametersWhenIdle(UPDATE_PARAM_PREFERENCE); 2376 } 2377 } 2378 2379 @Override 2380 public void onUserInteraction() { 2381 super.onUserInteraction(); 2382 keepScreenOnAwhile(); 2383 } 2384 2385 private void resetScreenOn() { 2386 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2387 getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2388 } 2389 2390 private void keepScreenOnAwhile() { 2391 mHandler.removeMessages(CLEAR_SCREEN_DELAY); 2392 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 2393 mHandler.sendEmptyMessageDelayed(CLEAR_SCREEN_DELAY, SCREEN_DELAY); 2394 } 2395 2396 private class MyHeadUpDisplayListener implements HeadUpDisplay.Listener { 2397 2398 public void onSharedPreferenceChanged() { 2399 Camera.this.onSharedPreferenceChanged(); 2400 } 2401 2402 public void onRestorePreferencesClicked() { 2403 Camera.this.onRestorePreferencesClicked(); 2404 } 2405 2406 public void onPopupWindowVisibilityChanged(int visibility) { 2407 } 2408 } 2409 2410 protected void onRestorePreferencesClicked() { 2411 if (mPausing) return; 2412 Runnable runnable = new Runnable() { 2413 public void run() { 2414 restorePreferences(); 2415 } 2416 }; 2417 MenuHelper.confirmAction(this, 2418 getString(R.string.confirm_restore_title), 2419 getString(R.string.confirm_restore_message), 2420 runnable); 2421 } 2422 2423 private void restorePreferences() { 2424 // Reset the zoom. Zoom value is not stored in preference. 2425 if (mParameters.isZoomSupported()) { 2426 mZoomValue = 0; 2427 setCameraParametersWhenIdle(UPDATE_PARAM_ZOOM); 2428 if (mZoomPicker != null) mZoomPicker.setZoomIndex(0); 2429 } 2430 2431 if (mHeadUpDisplay != null) { 2432 mHeadUpDisplay.restorePreferences(mParameters); 2433 } 2434 2435 if (mIndicatorWheel != null) { 2436 mIndicatorWheel.dismissSettingPopup(); 2437 CameraSettings.restorePreferences(Camera.this, mPreferences, 2438 mParameters); 2439 initializeIndicatorWheel(); 2440 onSharedPreferenceChanged(); 2441 } 2442 } 2443 2444 protected void onOverriddenPreferencesClicked() { 2445 if (mPausing) return; 2446 if (mNotSelectableToast == null) { 2447 String str = getResources().getString(R.string.not_selectable_in_scene_mode); 2448 mNotSelectableToast = Toast.makeText(Camera.this, str, Toast.LENGTH_SHORT); 2449 } 2450 mNotSelectableToast.show(); 2451 } 2452 2453 private void onShareButtonClicked() { 2454 if (mPausing) return; 2455 2456 // Share the last captured picture. 2457 if (mThumbnail != null) { 2458 mReviewImage.setImageBitmap(mThumbnail.getBitmap()); 2459 mReviewImage.setVisibility(View.VISIBLE); 2460 2461 Intent intent = new Intent(Intent.ACTION_SEND); 2462 intent.setType("image/jpeg"); 2463 intent.putExtra(Intent.EXTRA_STREAM, mThumbnail.getUri()); 2464 startActivity(Intent.createChooser(intent, getString(R.string.share_picture_via))); 2465 } else { // No last picture 2466 if (mNoShareToast == null) { 2467 mNoShareToast = Toast.makeText(this, 2468 getResources().getString(R.string.no_picture_to_share), Toast.LENGTH_SHORT); 2469 } 2470 mNoShareToast.show(); 2471 } 2472 } 2473 2474 private class MyIndicatorWheelListener implements IndicatorWheel.Listener { 2475 public void onSharedPreferenceChanged() { 2476 Camera.this.onSharedPreferenceChanged(); 2477 } 2478 2479 public void onRestorePreferencesClicked() { 2480 Camera.this.onRestorePreferencesClicked(); 2481 } 2482 2483 public void onOverriddenPreferencesClicked() { 2484 Camera.this.onOverriddenPreferencesClicked(); 2485 } 2486 2487 public void onShareButtonClicked() { 2488 Camera.this.onShareButtonClicked(); 2489 } 2490 } 2491 2492 private class MyCameraPickerListener implements CameraPicker.Listener { 2493 public void onSharedPreferenceChanged() { 2494 Camera.this.onSharedPreferenceChanged(); 2495 } 2496 } 2497} 2498